Home / 90,400.08-135,597.84-31,230.12

Finding the Fourth Proportional to 90,400.08, 135,597.84 and 31,230.12

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Solution

The fourth proportional to 90,400.08, 135,597.84 and 31,230.12 is: 46,844.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,400.08 : 135,597.84 = 31,230.12 : x
  2. Step 2: Convert to fraction form
    90,400.08/135,597.84 = 31,230.12/x
  3. Step 3: Cross multiply
    90,400.08x = 135,597.84 × 31,230.12
  4. Step 4: Simplify right side
    90,400.08x = 4,234,736,814.94
  5. Step 5: Solve for x
    x = 4,234,736,814.94/90,400.08
  6. Step 6: Final answer
    x = 46,844.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.